<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        div {
            position: relative;
            width: 100px;
            height: 100px;
            top: 50px;
        }
    </style>
</head>
<body>
<input type="button" value="">
    <div id="box">

    </div>
</body>
<script>
    function lian() {
        var time = null;
        var tep;

    }
</script>
</html>